Ticket #3451: labelledby.patch

Index: /Users/sgonzale/Documents/workspace/jQuery UI/ui/ui.dialog.js
===================================================================
--- /Users/sgonzale/Documents/workspace/jQuery UI/ui/ui.dialog.js	(revision 692)
+++ /Users/sgonzale/Documents/workspace/jQuery UI/ui/ui.dialog.js	(working copy)
@@ -49,16 +49,27 @@
 					height: '100%'
 				}),
 			
-			title = options.title || ' ',
-			uiDialogTitlebar = (this.uiDialogTitlebar =
-				$('
'))
-				.append('' + title + '')
+			uiDialogTitlebar = (this.uiDialogTitlebar = $('
'))
+				.addClass('ui-dialog-titlebar')
 				.append('X')
 				.prependTo(uiDialogContainer),
 			
+			title = options.title || ' ',
+			titleId = $.ui.dialog.getTitleId(this.element),
+			uiDialogTitle = $('')
+				.addClass('ui-dialog-title')
+				.attr('id', titleId)
+				.html(title)
+				.prependTo(uiDialogTitlebar),
+			
 			uiDialog = (this.uiDialog = uiDialogContainer.parent())
 				.appendTo(document.body)
 				.hide()
+				// ARIA support
+				.attr({
+					role: 'dialog',
+					'aria-labelledby': titleId
+				})
 				.addClass('ui-dialog')
 				.addClass(options.dialogClass)
 				// add content classes to dialog
@@ -407,6 +418,11 @@
 	
 	getter: 'isOpen',
 	
+	uuid: 0,
+	getTitleId: function($el) {
+		return 'ui-dialog-title-' + ($el.attr('id') || ++this.uuid);
+	},
+	
 	overlay: function(dialog) {
 		this.$el = $.ui.dialog.overlay.create(dialog);
 	}